Ship-davit.



-'SXJONES l 'SHIP oAvn,

APPLICATION FILED MAY Il. ISI-6.

1,218O87 Patented Mar.' 6, 1917.v

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immun srarns Armar orrion EDWARD s. JONES, or MOBILE, ALABAMA, AssIGNoR0E oNE-HALE-tro MARTIN vAN HEUvEL, or MOBILE, ALABAMA. Y

SHIP-DAVIT.

`Specification of Letters Patent.

Application filed Mayvll, 1916. Serial No. 96,925.`

To all whom t may concern:

Be it known that I, EDWARD S. JONES, a citizen of the United States, andresident of Mobile, inl the county of Mobile Aand State of Alabama, haveinvented certain new and useful Improvements in Ship- Davits, of whichthe following is a specification.

My invention relates to ship davits and more particularly to a movabledavit for supportingl life-boats.

An object of the present invention is to provide a ship davit forsupporting lifeboats in such a manner as to allo-w them to be easilylowered to the water and yet preventing them from contacting with thesides of the ship. Y V

Anotherimportant object of the present invention is to provide a shipdavit having means associated therewith whereby the persons using thelife-boat may lower the boat without any assistance from anyperson onthe deck of the ship.

A further object of the yinvention is to provide an apparatus of theabovementioned Character for supporting life-boats embodying meanswhereby the life-boatV maybe easily and quickly disengaged from theapparatus when the life-boat reaches the water.

A still further object of the invention is to provide a ship davit thatis mounted in such a manner as to prevent it from being broken or bentshould the ship strike against its landing place or other objects.

With the above and other objects in view, my invention consists in theconstructions, arrangements of parts and operations that will behereinafter described and illustrated in the accompanying drawings, inwhich-V Figure 1 is an elevation showing a portion of the side of a shipwith the life-boat supporting davit mounted thereon.

Fig. 2 is a transverse sectional view through one side of the ship andshowing a side view of the life-boat supporting davit in position whennot in use. This ligure also shows the life-boat supporting davit beinglowered.

Fig. 3 is an enlarged view of the upper end of one of the davitsshowing' the manually operable means for lowering the same. Fig. 4 showsa modified way of attaching the davits to the life-boat.

Referring more particularly to the drawing, the numeral 5 denotes a shipwhich may be of any type. p

F ormed in the side of the ship and extending .vertically thereof arerelatively wide longitudinal channels 6 which extend to the top deckAof'the ship.

Mounted in these longitudinal channels adjacent their lower extremitiesare the angular bearing plates 7. Pivotally connected with these bearingplates 7 as at 9 are the supporting davits 8 which normally lie withinthe longitudinal channel y6 and extend above the top deck of the ship.These davits are outwardly `and y downwardly curved at their upper endsand terminate in rectangular enlargements 10. Mounted in the ends of theenlargements y10 are the yokes 11 which are loosely engaged withlife-boat supporting hooks 12.

The numeral 13 indicates a.v life-boat of any conventional type havingmounted in its opposite ends U-shaped members 14 which are engaged withthe hooks 12 to support the life-boat at the top deck of 'the ship.

Mounted in each of the enlargements 10 is a shaft 15 carrying a. gear 16upon one end and 1 windlass 17 upon its opposite end. Also mounted uponeach ofthe'se enlargements is a crank handle 18 vcarrying a gear 19which meshes with thegear 16 to rotate the windlasses. In order toallowthe winddirection, a reversible pawl 2O Iis pivoted upon each of theenlargements 10 adjacent the gear 19 to engage the same. Secured to thewindlasses l? are cables or ropes 21 which are adapted to be woundtherearound. One end of these cables is extended around pulleys 22 thatare mounted uoon the upper deck of the ship, and secured to securingmembers 23 which are mounted on the davits 8.

Engaged about each of the windlasses 17 is a brake band 24. Mounted uponeach of the davits 8 adjacent to the gears 19 is a crank handle 27carrying a link 28. These links are pivotally connected at both endswith the ends of the brake bands 24;.

Mounted within the longitudinal channel 6 are the vertical rods 29having grooved rollers A30 mounted in their upper ends..

ed upon the ship. Only one of which is shown 1n the drawings, 1t beingobvious that one wlndlass 31 1s necessary for each davit.

VCables or ropes 32 are extended over the rollers 30 and connected withthe davits S, as at 33, and the windlasses 31. Carried by the rods 29are hooks 341- which engage eyes carried by the davits 8 to support thesame in a vertical position.

Having described the various parts of my invention, the manner ofoperation will now be set forth: rlhe life-boat being in the positionshown in Fig. 1, the hooks 34 are disengaged from the davits 3. A personnow rotates each of the windlasses 17 to slowly unwind the ropes orcables 21, which by reason of gravity will allow the davits to swingdownwardly to the water. Should it be desired to stop the life-boat onits downward movement or to lower it more slowly, the crank handles 27are rotated to tighten the brake bands. After the life-boat has reachedthe water, the hooks 12 are disengaged from the yokes 14. The windlasses31 are now rotated to bring the davitvs to their normal position. Itwill be seen that these windlasses 31 may be also used to help lower thelifeboat shouldl the load therein be too heavy to be handled from thewindlasses 17 alone, or they may alone be used to lower the lifeboat.

In Fig. 4, a different manner of engaging the hooks 12 with thelife-boat is shown. A cable or other flexible element 35 adapted to beengaged by one of the hooks is permanently attached at one end to thelife-boat and having a head 36 upon its free end which normally liesupon the upper edge of the life-boat. Pivotally mounted upon the upperedge of the life-boat as at 37 is a lever having an arcuate seat 39therein which engages the cable adjacent the head 36. A yoke 40 isswiveled in the upper edge of the life-boat and normally'engages thefree end oi' the lever 3T to securely retain the same in engagement withthe cable 35. When it is desired to release the hooks 12 from the cables35, the yoke 40 is disengaged from the lever 37 which in turn isdisengaged from the cable 35.

F rom the foregoing description taken in connection with theaccompanying drawing the advantages of the construction and method ofoperation will be readily understood by those killed in the art to whichthe invention appertains, and while l have described the principle ofoperation, together with the apparatus which I now consider to be thebest embodiment thereof, I desire to have it understood that theapparatus shown is merely illustrative and that such changes may be madewhen desired as fall within the scope of the appended claims.

That is claimed is:

. 1. The combination with a ship, of liieboat supporting davitspivotally mounted thereon, a windlass mounted upon each ot the davits,pulleys mounted on the ship, and flexible elements connected with thedavits and windlasses and engaging the pulleys.

2. The combination with a ship, of' lifeboat supporting davits pivotallymounted thereon, an enlargement carried upon the free end of each of thedavits, a windlass mounted upon each of the enlargements, pulleysmounted on the ship, and flexible elements connected with the davits andwindlasses and engaging the pulleys.

EDWARD S. JONES.

` Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents,

Washington, D. C.

